6" x 6" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Aluminum Our grilles feature a durable

Our grilles feature a durable powder-coat finish

actual front end outer dimensions are approximately 36 5/8" width X 16 5/8" height

+ Product Details Size - 10"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 6"h is the size for the duct opening measurement only

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

6" x 6" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Aluminum Our grilles feature a durable+ Product Details Size 6" X 6" is the size for the duct opening measurement only, actual front end outer dimensions are 3". Design Equipped with lever for full airflow control; back blades made of black plastic for reduced air noise and discreet appearance; "Opposing" back blades, ensuring they don't overlap, provide precise damper control and superior air dispersion. High Quality Aluminum The premium durable aluminum will never rust and it will never